fesler



Feb. .20,` 1923.

M. A. FESLER 2 sheets-shet l BURNER Filed Mar. 24, 1920 Feb. 20, 1923.

M. A. FESLER BURNER Filed Mar. 24, 1920 2 sheets-sheet 2 I fnv'envgor.-

Patata ses. au, reas.

hihihihi@ iaEEN'l UFHQE.

MILTON A, FESLER, ,GE OAKLAND, GALFORIA, ASSGNOR T PETROLEUM HEAT AND 4PKHYJER CUMPANY, A. CORPORATION OF DELAWARE.

BURNER.

Application filed March 24, 1920. Serial No. 368,275.

.To alien/7mm t may concern:

Be lt known that l, MIL'roN A. FnnsLnR, a citizen `of the United States, residing at Oakland, in the county of Alameda and.

State of Californimhave invented an lmprovement in Burners, of which the following description, in connection with the accompanying drawings, is a specioatiomlike characters on the Ldrawings representing like parts.

1 The invention to be hereinafter described relates to burners, and more particularly to burners using liquid fuel, such, for example,

y as crude oil. A

vBurners of this type usually `comprise a liquid fuel conduit and a steam or compressed air conduit leading to a mixing chamber, inywhich the air or steammeets the liquidl fuel and breaks up and atomizes the latter.

l fleretofore, the mixing of the compressed air or .steam has occurred adjacent to the nozzle or delivery end `of theburner, and an excessive amount of air or steam has been 2li-necessary in order properly to .atomize and i break up the liquid fuelforeiiicient combustion effect. As a consequence, an excess amount of air or steam has been introduced efficient burner in which the amount of 40 `steam requiredv for proper atomization of the liquid fuel is materially reduced with resultant important economies in steam and fuel consumption.

` ln carrying the invention into practical effect, the burner is so constructed that the oil or liquid fuel andthe steam may meet at a point remote from the nozzle or delivery end of the burner, and therefore, the mixture of the two and vatomization of the oil by the steam may occur while they are moving through the burner toward the delivery end thereof. This allows the steam time efiiciently to atomize and break up the oil with a material reduction in the amount of steam required. I

Another purpose of. the invention is to provide a simple and efficient valve which may be located remotely from the delivery end of the burnerto regulate the feed of the oil thereto. ln the present instance of the invention, the construction is such that the valve is automaticallymoved from its seat by the pressure ofthe steam passing through the burner against a yielding or spring pressure, and the degree of opening of the valve will depend upon the volume of the steam passing the-valve, so that a desirable automatic proportioning` of the oil and steam may be obtained.

Another purpose of the invention is to provide a simple and efficient mounting for the burner, and oil and steam passages for the burner and mountingwhich may be readily connected on introduction of the burner to the mounting, and separated on removal of the burner from its mounting.

` Another purpose of the invention is to provide means remote from the nozzle of the burnerl for producing a primary atomization of the liquid fuel, and means adjacent the nozzle for producing a secondary or v'further atomization of the fuel.

Another purpose of the invention is to provide simple and efficient means whereby onshutting down the burner prior to removal from its mounting, any residual oil in the oil passages of the burner may be blown therefrom by the steam.

lil/'ith the aforesaid and other purposes in view, the character of the invention may be best understood by reference to the following description of one `good form thereof shown in theA accompanying drawings, wherein:

Fig. l is a longitudinal section through a burner shown herein as embodying the invention; 4

Fig. 2 is a plan of a portion of the construction shown in Fig. l;

. Fig. 3 is a vertical section taken on line 3-3 of Fig. l; y

Fig. t isa vertical section taken on line l-fof Fig. l; y

Fig. 5 on an enlarged scale is a sectional view of the valve construction showing the valvein closed position; `and y G is a viewl similar to Fig. 5 showing the valve in its open position.

Referring to the drawings, the burner `may be provided with a mounting of suitable construction, in the present instance, in the form of a union 1 having a sleeve 3 and arms 5 and 7 projecting diametrically oppositely therefrom and provided respectively with 'an oil conducting passage 9 and a compressed air or steam conducting passage 11. The outer ends of these arms are adapted to be connected with the pipe for conducting the oil or liquid fuel `from its source of supply, and for conducting the com ressed air or steam from its source of ly to the burner. These passages are curved rearward andprovided with tapered rims 13 for a purpose to be described.

The burner, in the present instance of the invention, comprises a cylinder 15 adapted tofit into the mounting Sleeve 3 referred to, and. provided with longitudinal ribs 17 to facilitate ready insertion of the cylinder into and out of' said sleeve. Projecting out wardly from the cylinder 15 are the arms 19 and 21 containing respectively an oil conducting passage 23 and a steam conducting passage 25. These passages are curved forwardly` and provided with grooves 27 adapted to receive the taperedy rims 13 at the rear ends of the oil conducting passage 9 and the steam conducting passage 11. `Suitable packing material may be introduced into saidA grooves to insure tight conneet-ion of the passages when the burner is secured to its mounting by means to be described.

Projecting forwardly from the cylinder Vl5 of the burner, a tube, gun or body 29 may be provided of substantial length, and conveniently secured to said sleeve by a collar 3Q threaded to said tube and sleeve. The outer delivery end of the tube 29 may be provided with a nozzle 31 conveniently connected to the tube by a flanged collar 33 threaded to said nozzle and tube. At the outer end of the nozzle is an orifice 35 for delivering the oil and steam mixture from the burner, as more fully hereinafter described.

As stated, one of the purposes of the invention is to provide simple and efficient valve means located remotely from the delivery end of the burner for controlling the delivery of the fuel to the burner. This valve means, in the present instance of the invention. comprises 4a seat 37, preferably tapered, on a ring 47 which may be threaded to the inner surface of the cylinder 15. Before the collar 30 is screwed into the sleeve, the valve seat ring may be screwed therein until limted4 by its engagement with a shoulder 41 in said sleeve.

Ctr-operating with the valve seat is a valve, in the present instance, comprising a disk 49 having a hollow stem 51 projecting therefrom, the periphery of said disk being tapered 'tofconform to the taper of the valve seat. Encircling the hollow stem 51 is an outer hollow stern 53 having a flange 55 pro jecting outwardly therefrorn,and provided with a tapered periphery also for engagement with said seat. The flange 55 may be connected to the valve disk 49 by pins or rivet-s 56, said flange and disk bein separated by spacing washers on sai pins or rivets. The construction is such that an annular oil conducting passage 57 is provided between the ou.terand inner stems, and between the fla-nge and disk.

ythe oil conducting passage 23 may communicate with a neck 60 which may roject somewhat into the cylinder 15. he outer stem 53 of the valve may fit into this neck so as toguide the valve in its move ments to and from its seat, and to prevent entrance ot steam into the oil conducting passa-ge 23, as more fully hereinafter described.

Suitable means may be provided to urge the valve toward its seat. In the present instance et the. invention, this means coinprises a. rod 61 having a reduced end 63 projectin through the inner hollow stern 51 and provided with a nut 65. When this nut is tightened, it will securely connect the valve to the rod. The latter may project rearwardly beyond the arms 19 and 21 to receive a coil spring G7 which may he confined between adjusting and securing nuts 69 on said rod. and the base of.' a socket 7l projecting rearwardly from said arms. `The construction is such that the spring will tend to urge the valve to its seat.

The spring may be protected by a housing 73 having a closed end 74, and its opposite end threaded to t-he socket 7l, the construction being such that the housing may be readily removed to permit access to the nuts 69 to effect variation of the tension of the spring as desired.

Suitable means may be provided to secure the liurner to its moimting. Io accon'lj'ilish this, in the present instance, a yoke 75 may be pivotally mounted on screw bolts 77 threaded to opposite sides of projections on the mounting sleeve 3. )i screw 79 may be threaded into the rear end of the yokefand be adapted to engage the closed end 74 of the housing,y said screw being provided with a hand wheel 81 to enable ready adjustment thereof. To facilitate presentation of the burner to the proper position on its mounting, the cylinder l5 may have a fork 1:7L and a lug 15 thereon adapted respectively to engage a lug 3 and a fork 3h projecting 'from the sleeve 3. The construction is such that when it is desired. to introduce the burner into itsmounting the arrns 19 and 2l may be grasped and presented to the arms and 7 and the fork 15a and lug 15b of the cylinder may respectively engage the lug 3a and 'fork 3" of the sleeve. rl`he `forks and lugs will insure positioning of the burner lll() l l (i tapered rims 13 will be pressed into theA grooves 27 so as to prevent any ypossibility of leakage between them. Thus, the burner will be securely locked inits mounting in readiness :tor use. When it is desired to remove the burner from its mounting, it merely necessary to release the hand screw 79, swing the yolre 75 to one side, and then 'the housingl 78 may be grasped, and the burner may be pulled rearward out of its mounting.

When the burner is placed in its mounting in tiring position, the usual valves are opened in the oil and steam supply pipes connected to the'mounting arms 5 and 7 respectively. The steam will flow through the passages 1l and 25 and press against the rear face of the valve flange 55, thereby moving the valve from its sea-t against the opposition ot the spring 67. The oil will tlow from'thepassages? and 23 through the annular passage 57 in the valve, and outwardly in the path of the steam.` The two will meet in the mixing chamber 83 directly in front of the valve, the construction being such that the oil and the steam will be eitectively atomized by the latter. The atomization of the oil by the steam will progress and increase in the transit of the mixture through the'tube 29 toward the i nozzle.

Suitable means may be provided further to atomizev the oil prior to its delivery 'from the nozzle. This means, in the present instance, is inthe torm of a ring 85 tted into and secured to the nozzle 3l, and havingan orince 87 substantially smaller than the internal. diameter of the nozzle. The ring may have counterboresv87=l tapered toward the' orifice 87. The construction is such that the mixtureon reaching the ring will be deflected inward through the orifice, thereby causing the steam more .thoroughly to comuiingle with the oil and eitect further atomization thereof. The mixture after passing through the orifice 87 vflows through the delivery orilice 85 into the combustion chamber ot the t'urnace.

The construction of the valve means is such that it tends to produce ellicient co mingling and atomization oi the oil by the steam, and'since the valve means is located remotely trom the delivery end of the burner, and the mixture has substantial length ot travel in passing` trom the valve. means to the delivery end of the burner, the

steam has sutlicient time thoroughly to break up and atomize the oil, and the primary atomization thus etiected may be increased by the secondary atomization produced by the orifice ring 85 as the mixture passes therethrough. The thorough atomization of the oil thus obtained prior to the delivery ot the mixture tromthenozzle, ena-bles substamt-iai reduction in the amount oic steam required to etlect the proper atomization. Thus, an important economy in steam consumption is obtained, and an important economy in the amount of tuel required in producing the steam.

Suitable means may be provided to drive out. residual oil `from the oil conducting pas- Sagesl, 23, and from the tube 29 and nozzle preparatory to shutting down the burner. To accomplish this, in the present instance, the mounting mayI be provided with a. by-pass passage 89 (Fig. 4) lea-ding trom the steam passage 1l to the oil passage 9. A valve 91 may be tapped in a boss 93 on said sleeve, and serve to open or close the bypass passage 89 asdesired. When it is desired to shut off the burner, the usual valve in the pipe leading to the oil conducting passage 9 is closed, and the by-pass valve 91 is opened, thereby allowing steam to flow from thepassage 11 around through the by-pass 89 into the oil passage 9, and drive any residual oil from the passages 9, 23. the tube 29 and the nozzle 3l. i

Since the valve ttor controlling the supply of oil is located in the burner at a point remote trom the nozzle, it does not experience the high temperature ot the furnace, and the'liability ot' clogging the valve and other parts by carbonization of the oil is reduced to aminimum. Also, the parts ot the valve will not be alternately subjected to high and low temperatures on tiring and ceasing tiring, and therefore, said parts will not experience expansion aud contraction trom heating and cooling such as would be liable to detorm or injure the saine and prevent proper operation thereof.

The annular passage in the valve is such thatthe oil is delivered outwardly throughout the periphery of the valve, and is theres by' desirably distributed into the steam which flows between the valve and its seat throughout the periphery thereof. The area of the valve subjected to the ste-am pressure is ample, and therefore. the steam may readily unseat the valve without requiring pressure as high as has heretofore been necessary. lt will be noted that the tube 29 eX- tending from theI valve to the nozzle is contracted or is smaller in diameter than the mixing chamber 83. This will tend to defleet the oil and steam mixture inward from the periphery of the valve, and contribute to the thorough mixing ol. the two and atomization of the oil, and will also add to sol but the veloci the stef: ijiassing the valve :c substantially constant 'mithin the limi of normal variations in ille f "un volun'ie prissinggf the valve :for work :orf tionfy Xs a ,fnziseqinfnocthe team ou the oil may ifitially consta-nt With- ,..e ol" oi l and steam u l eondil'ons. uwtion enables rca., v access to ,v 'for the purpose oi' j or replacement thereof. ish this it is merely necessary to l crew the collar 30 :from the tube 29 and .sleeve l5, thereby exposingr the valve and :wat iciilii i the latter.

Since l steam pressure is required thon oughly to :itemize the oil than heretofore has been necessary, there will be no danger of projeetii'ip,` the flame ol the burner so far in the combustion chamber as to throw unatomized particles ot' the oil on the Water tubes oli the boiler. lt is Well known that :t Casing provided with a del'y n'zixing chamber loeatcd remo? orice, a long?r conduit exteni ehiiirnber to said orifice, und on and steam passages leading to raid mixing chamber; a valve seat adjacent the deliveiw' ends o? tb oil and steam pas "-pres valve 'for cloflaingg bo ,h sk i n by pressure or Athe steam to i l steam from said passages to said ch amber.

In a fuel oil bui-neny 'the eimibinatiou oli :i easing provided with a delivery orifice, a mixing chamber loca` reniutelv 'troni said orifice and oil and steam pa leadiiuij to said mixingT ehamberg a scat zu jacent said u'iixii'igr chamber, a "y'alvov having a hollow stem sldably mounted in said oil pass .1 l spring means tending to seat said 'valve7 the latter being` opened by p ire oi? steam in said steam passage, and a conduit Jfor coudueting the intermingled oil and steam from Vl1 particles are throivn onto the waterthe mixing chamber to the delivery orifice.

Il. lu 'luel oil burner, the eoinbinal'iion ot a gun a sleeve detachal'ily scoured to said and having sepirate oil auCv atoinizing iiuid passages therein. a valve suit removably mounted in said sleeve, valve means cooperating with. said seat. for controlling; the delivery of oil and atoiniI/iing fluid to the gun li'rou: said passages, and .means Jr'or subjecting said valve means to the pressure of the ati'in'iizing 'luid toopcn said valve means.

.L ln :t 'fuel oil burin-u', the combination olf a .guirl'i-fii/.ng a delivery oi'ienii'i. uieans to conduct oil and steam to said gun. valve irez/ins ivitlz-,in il path of travel of the steam and adapted to open in response to the pressure ot' steam thcreagaiust nd deliver oil andsteam to said gun. and means automatically to vary the openino' of the valve means and maintain the veloc of the steam pass ing the saine substantially constant under normal Vworking `Conditions.

ln a burner, the combination ol'i a cashavinig oil and steam conducting pasu valve seat :uljacenli the delivery ends 11d p sages. a valve havingr a port there- :lior oondueting the oil from the oil pas C in tend' to close said valve, the latter being positioned to be acted upon by the steam and adapted to open in response to steam pressure thereon to allow delivery of the oil ufrom the valve port and the delivery of steam 'troni the steam passage past said valve scat.

G. In a burner` the combination of a casing having oil and steam f'ondueting passages, a valve seat adj aeent the delivery end of said passage, a valve for controlling the flow oi oil and steam guided by the oil conducting passage and having a port therein -for conducting the oil from said passage, and spring means tending to close said valve, the latter being; adapted to open and regulate the delivery of oil and steam from said passages in accordance With variations in the pressure of the steam on said valve.

7. In a burner, the Combination of a mounting havingr oil and atoinining' fluid conducting passages and a gun, a casing re* movably connected as unit to said mount.- ing. said casingr hai/'ing oil and atomizing flui d conducting passages adapted to register respectively with the oil and atomizing fluid conducting passages of said mounting, u valve seat mounted in said casing adjacent the delivery ends of the oil and atomizing fluid eonduetiug passages in said casing, and a valve cti-operating with said seat to oontrol the delivery ot' oil and steam through theopening between the valve and seat.

8. In a burner, the combination of agun having oil and atomizing fluid conductingr passages` a valve seat mounted in the atomizing fluid conducting passage, and a valve co-operating with said seat havingprovision 'tor conducting the oil from the oil conducting passage to the opening between the valve and its seat, said valve when closed being adapted to, shut oil the supply et oil and 'atomizing duid to the delivery end ot' the burner,

9. ln a burner, the combination ot a casing having oil and atomizing fluid conducting passages therein, a valve seat mounted in the atomizing tluid conducting passage, and a valve havinga port therein disposed to conduct thev oil vtrom the oil conducting passage voutward toward said seat in .v l .,r' ,y

the path oi the atomizmg duid passing oei tiveen'said valve and seat.

. l0.'n a burner, the combination ot a casing having oil and atomizing fluid conducting passages therein, a valve seatL mounted in the atomizing tluid conductingpassage,

valve having a port therein disposed to conduct the oil from the oil conducting passage outward toward said seat in the path of the atomizing tiuid p assingbetvveen said valve and seat, and spring means tending to close the valve toward its seat and yieldable "to allow opening of the valve in response to pressure ot the atomizing {iuid thereon. v

11. In a burner, the combination ot av casing having oil and atomizing iiuid conducting passages having delivery portions, one of theA latter encircling the other, a valve seat, a valve co-operat-ing With said seat having a part guided by one of said passage portions and having a port tor conducting the oiltovvard the periphery of the valve, and spring means tending to move the valvet0- yWard its seat.

path ot the steam delivered through thev opening between the valve and its seat.

13.111 a burner, the combination ot a casing having oil and steam conducting'passages, and a delivery oriice, valve means .mounted in said casing remotely trom sai oritce tor cont-rolling the oil and steam, and

an orifice member located intermediate said delivery orifice and valve means -for prometing` mixture of the oil and steam.

14. ln a burner, the combination ot a gun having a delivery orifice, a easing having oil and steam conducting passages therein, means detachably to secure said casing to 'the rear end oit the gun, a valve seat in said casing' adjacent the rear end ot said gun, a valve co-operating with said seat for controlling the delivery ot oil and steam from said casing into said gun, and spring means tending to move said valve toward its seat.

l5. In a burner, the combination ot a gun having a delivery end and a rear end, a casing having oil and steam conducting passages therein, valve means mounted in said casing Yfor controlling the delivery ot oil and steam :trom said passages into said gun, and means detachably to secure said casing to said gun.

16. ln a burner, the combination ot a casing having' oil and steam conducting passages therein, a mixing chamber, a valve seat in said casing adjacent said chamber, vand an oil and steam supply control valve cro-Operating with said seat having` provision 'for conducting the oil trom said oil pas sage to the Asteam delivered between said valve and seat.

17. ln a burner, the combination of a gun, a casing secured to said gun having oil and steam conducting passages therein leading to said gun, valve means for controlling the delivery et oil and steam from said passages into said gun, and means to ley-pass the steam from the steam passage through the `oil passage to drive residual oil from the latter. l

18. ln a fuel voil burner, the combination of a casing provided With a delivery orifice, a mixing chamber located remotely trom l said orifice, a long conduit extending from said chamber to the oritice, conduits for conducting fuel and fluid to the mixing chamber, a valve tor closing` both conduits and movable to open position by the pressure ot the fluid in its conduit against the valve, and spring means tending` constantly to 'close the valve but yieldable in response to the pressure ot the tluid to open and allow discharge ot the fuel and fluid to the ixing chamber.

ln testimony whereof, l have signed my name to this specification.

MILTON A. FnsLnR. 

